| // info about each config option. |
| |
| var debug = process.env.DEBUG_NOPT || process.env.NOPT_DEBUG |
| ? function () { console.error.apply(console, arguments) } |
| : function () {} |
| |
| var url = require("url") |
| , path = require("path") |
| , Stream = require("stream").Stream |
| , abbrev = require("abbrev") |
| |
| module.exports = exports = nopt |
| exports.clean = clean |
| |
| exports.typeDefs = |
| { String : { type: String, validate: validateString } |
| , Boolean : { type: Boolean, validate: validateBoolean } |
| , url : { type: url, validate: validateUrl } |
| , Number : { type: Number, validate: validateNumber } |
| , path : { type: path, validate: validatePath } |
| , Stream : { type: Stream, validate: validateStream } |
| , Date : { type: Date, validate: validateDate } |
| } |
| |
| function nopt (types, shorthands, args, slice) { |
| args = args || process.argv |
| types = types || {} |
| shorthands = shorthands || {} |
| if (typeof slice !== "number") slice = 2 |
| |
| debug(types, shorthands, args, slice) |
| |
| args = args.slice(slice) |
| var data = {} |
| , key |
| , remain = [] |
| , cooked = args |
| , original = args.slice(0) |
| |
| parse(args, data, remain, types, shorthands) |
| // now data is full |
| clean(data, types, exports.typeDefs) |
| data.argv = {remain:remain,cooked:cooked,original:original} |
| Object.defineProperty(data.argv, 'toString', { value: function () { |
| return this.original.map(JSON.stringify).join(" ") |
| }, enumerable: false }) |
| return data |
| } |
| |
| function clean (data, types, typeDefs) { |
| typeDefs = typeDefs || exports.typeDefs |
| var remove = {} |
| , typeDefault = [false, true, null, String, Array] |
| |
| Object.keys(data).forEach(function (k) { |
| if (k === "argv") return |
| var val = data[k] |
| , isArray = Array.isArray(val) |
| , type = types[k] |
| if (!isArray) val = [val] |
| if (!type) type = typeDefault |
| if (type === Array) type = typeDefault.concat(Array) |
| if (!Array.isArray(type)) type = [type] |
| |
| debug("val=%j", val) |
| debug("types=", type) |
| val = val.map(function (val) { |
| // if it's an unknown value, then parse false/true/null/numbers/dates |
| if (typeof val === "string") { |
| debug("string %j", val) |
| val = val.trim() |
| if ((val === "null" && ~type.indexOf(null)) |
| || (val === "true" && |
| (~type.indexOf(true) || ~type.indexOf(Boolean))) |
| || (val === "false" && |
| (~type.indexOf(false) || ~type.indexOf(Boolean)))) { |
| val = JSON.parse(val) |
| debug("jsonable %j", val) |
| } else if (~type.indexOf(Number) && !isNaN(val)) { |
| debug("convert to number", val) |
| val = +val |
| } else if (~type.indexOf(Date) && !isNaN(Date.parse(val))) { |
| debug("convert to date", val) |
| val = new Date(val) |
| } |
| } |
| |
| if (!types.hasOwnProperty(k)) { |
| return val |
| } |
| |
| // allow `--no-blah` to set 'blah' to null if null is allowed |
| if (val === false && ~type.indexOf(null) && |
| !(~type.indexOf(false) || ~type.indexOf(Boolean))) { |
| val = null |
| } |
| |
| var d = {} |
| d[k] = val |
| debug("prevalidated val", d, val, types[k]) |
| if (!validate(d, k, val, types[k], typeDefs)) { |
| if (exports.invalidHandler) { |
| exports.invalidHandler(k, val, types[k], data) |
| } else if (exports.invalidHandler !== false) { |
| debug("invalid: "+k+"="+val, types[k]) |
| } |
| return remove |
| } |
| debug("validated val", d, val, types[k]) |
| return d[k] |
| }).filter(function (val) { return val !== remove }) |
| |
| if (!val.length) delete data[k] |
| else if (isArray) { |
| debug(isArray, data[k], val) |
| data[k] = val |
| } else data[k] = val[0] |
| |
| debug("k=%s val=%j", k, val, data[k]) |
| }) |
| } |
| |
| function validateString (data, k, val) { |
| data[k] = String(val) |
| } |
| |
| function validatePath (data, k, val) { |
| if (val === true) return false |
| if (val === null) return true |
| |
| val = String(val) |
| var homePattern = process.platform === 'win32' ? /^~(\/|\\)/ : /^~\// |
| if (val.match(homePattern) && process.env.HOME) { |
| val = path.resolve(process.env.HOME, val.substr(2)) |
| } |
| data[k] = path.resolve(String(val)) |
| return true |
| } |
| |
| function validateNumber (data, k, val) { |
| debug("validate Number %j %j %j", k, val, isNaN(val)) |
| if (isNaN(val)) return false |
| data[k] = +val |
| } |
| |
| function validateDate (data, k, val) { |
| debug("validate Date %j %j %j", k, val, Date.parse(val)) |
| var s = Date.parse(val) |
| if (isNaN(s)) return false |
| data[k] = new Date(val) |
| } |
| |
| function validateBoolean (data, k, val) { |
| if (val instanceof Boolean) val = val.valueOf() |
| else if (typeof val === "string") { |
| if (!isNaN(val)) val = !!(+val) |
| else if (val === "null" || val === "false") val = false |
| else val = true |
| } else val = !!val |
| data[k] = val |
| } |
| |
| function validateUrl (data, k, val) { |
| val = url.parse(String(val)) |
| if (!val.host) return false |
| data[k] = val.href |
| } |
| |
| function validateStream (data, k, val) { |
| if (!(val instanceof Stream)) return false |
| data[k] = val |
| } |
| |
| function validate (data, k, val, type, typeDefs) { |
| // arrays are lists of types. |
| if (Array.isArray(type)) { |
| for (var i = 0, l = type.length; i < l; i ++) { |
| if (type[i] === Array) continue |
| if (validate(data, k, val, type[i], typeDefs)) return true |
| } |
| delete data[k] |
| return false |
| } |
| |
| // an array of anything? |
| if (type === Array) return true |
| |
| // NaN is poisonous. Means that something is not allowed. |
| if (type !== type) { |
| debug("Poison NaN", k, val, type) |
| delete data[k] |
| return false |
| } |
| |
| // explicit list of values |
| if (val === type) { |
| debug("Explicitly allowed %j", val) |
| // if (isArray) (data[k] = data[k] || []).push(val) |
| // else data[k] = val |
| data[k] = val |
| return true |
| } |
| |
| // now go through the list of typeDefs, validate against each one. |
| var ok = false |
| , types = Object.keys(typeDefs) |
| for (var i = 0, l = types.length; i < l; i ++) { |
| debug("test type %j %j %j", k, val, types[i]) |
| var t = typeDefs[types[i]] |
| if (t && type === t.type) { |
| var d = {} |
| ok = false !== t.validate(d, k, val) |
| val = d[k] |
| if (ok) { |
| // if (isArray) (data[k] = data[k] || []).push(val) |
| // else data[k] = val |
| data[k] = val |
| break |
| } |
| } |
| } |
| debug("OK? %j (%j %j %j)", ok, k, val, types[i]) |
| |
| if (!ok) delete data[k] |
| return ok |
| } |
| |
| function parse (args, data, remain, types, shorthands) { |
| debug("parse", args, data, remain) |
| |
| var key = null |
| , abbrevs = abbrev(Object.keys(types)) |
| , shortAbbr = abbrev(Object.keys(shorthands)) |
| |
| for (var i = 0; i < args.length; i ++) { |
| var arg = args[i] |
| debug("arg", arg) |
| |
| if (arg.match(/^-{2,}$/)) { |
| // done with keys. |
| // the rest are args. |
| remain.push.apply(remain, args.slice(i + 1)) |
| args[i] = "--" |
| break |
| } |
| var hadEq = false |
| if (arg.charAt(0) === "-" && arg.length > 1) { |
| if (arg.indexOf("=") !== -1) { |
| hadEq = true |
| var v = arg.split("=") |
| arg = v.shift() |
| v = v.join("=") |
| args.splice.apply(args, [i, 1].concat([arg, v])) |
| } |
| |
| // see if it's a shorthand |
| // if so, splice and back up to re-parse it. |
| var shRes = resolveShort(arg, shorthands, shortAbbr, abbrevs) |
| debug("arg=%j shRes=%j", arg, shRes) |
| if (shRes) { |
| debug(arg, shRes) |
| args.splice.apply(args, [i, 1].concat(shRes)) |
| if (arg !== shRes[0]) { |
| i -- |
| continue |
| } |
| } |
| arg = arg.replace(/^-+/, "") |
| var no = null |
| while (arg.toLowerCase().indexOf("no-") === 0) { |
| no = !no |
| arg = arg.substr(3) |
| } |
| |
| if (abbrevs[arg]) arg = abbrevs[arg] |
| |
| var isArray = types[arg] === Array || |
| Array.isArray(types[arg]) && types[arg].indexOf(Array) !== -1 |
| |
| // allow unknown things to be arrays if specified multiple times. |
| if (!types.hasOwnProperty(arg) && data.hasOwnProperty(arg)) { |
| if (!Array.isArray(data[arg])) |
| data[arg] = [data[arg]] |
| isArray = true |
| } |
| |
| var val |
| , la = args[i + 1] |
| |
| var isBool = typeof no === 'boolean' || |
| types[arg] === Boolean || |
| Array.isArray(types[arg]) && types[arg].indexOf(Boolean) !== -1 || |
| (typeof types[arg] === 'undefined' && !hadEq) || |
| (la === "false" && |
| (types[arg] === null || |
| Array.isArray(types[arg]) && ~types[arg].indexOf(null))) |
| |
| if (isBool) { |
| // just set and move along |
| val = !no |
| // however, also support --bool true or --bool false |
| if (la === "true" || la === "false") { |
| val = JSON.parse(la) |
| la = null |
| if (no) val = !val |
| i ++ |
| } |
| |
| // also support "foo":[Boolean, "bar"] and "--foo bar" |
| if (Array.isArray(types[arg]) && la) { |
| if (~types[arg].indexOf(la)) { |
| // an explicit type |
| val = la |
| i ++ |
| } else if ( la === "null" && ~types[arg].indexOf(null) ) { |
| // null allowed |
| val = null |
| i ++ |
| } else if ( !la.match(/^-{2,}[^-]/) && |
| !isNaN(la) && |
| ~types[arg].indexOf(Number) ) { |
| // number |
| val = +la |
| i ++ |
| } else if ( !la.match(/^-[^-]/) && ~types[arg].indexOf(String) ) { |
| // string |
| val = la |
| i ++ |
| } |
| } |
| |
| if (isArray) (data[arg] = data[arg] || []).push(val) |
| else data[arg] = val |
| |
| continue |
| } |
| |
| if (types[arg] === String && la === undefined) |
| la = "" |
| |
| if (la && la.match(/^-{2,}$/)) { |
| la = undefined |
| i -- |
| } |
| |
| val = la === undefined ? true : la |
| if (isArray) (data[arg] = data[arg] || []).push(val) |
| else data[arg] = val |
| |
| i ++ |
| continue |
| } |
| remain.push(arg) |
| } |
| } |
| |
| function resolveShort (arg, shorthands, shortAbbr, abbrevs) { |
| // handle single-char shorthands glommed together, like |
| // npm ls -glp, but only if there is one dash, and only if |
| // all of the chars are single-char shorthands, and it's |
| // not a match to some other abbrev. |
| arg = arg.replace(/^-+/, '') |
| |
| // if it's an exact known option, then don't go any further |
| if (abbrevs[arg] === arg) |
| return null |
| |
| // if it's an exact known shortopt, same deal |
| if (shorthands[arg]) { |
| // make it an array, if it's a list of words |
| if (shorthands[arg] && !Array.isArray(shorthands[arg])) |
| shorthands[arg] = shorthands[arg].split(/\s+/) |
| |
| return shorthands[arg] |
| } |
| |
| // first check to see if this arg is a set of single-char shorthands |
| var singles = shorthands.___singles |
| if (!singles) { |
| singles = Object.keys(shorthands).filter(function (s) { |
| return s.length === 1 |
| }).reduce(function (l,r) { |
| l[r] = true |
| return l |
| }, {}) |
| shorthands.___singles = singles |
| debug('shorthand singles', singles) |
| } |
| |
| var chrs = arg.split("").filter(function (c) { |
| return singles[c] |
| }) |
| |
| if (chrs.join("") === arg) return chrs.map(function (c) { |
| return shorthands[c] |
| }).reduce(function (l, r) { |
| return l.concat(r) |
| }, []) |
| |
| |
| // if it's an arg abbrev, and not a literal shorthand, then prefer the arg |
| if (abbrevs[arg] && !shorthands[arg]) |
| return null |
| |
| // if it's an abbr for a shorthand, then use that |
| if (shortAbbr[arg]) |
| arg = shortAbbr[arg] |
| |
| // make it an array, if it's a list of words |
| if (shorthands[arg] && !Array.isArray(shorthands[arg])) |
| shorthands[arg] = shorthands[arg].split(/\s+/) |
| |
| return shorthands[arg] |
| } |
